Class: StudFinder::Diff

Inherits:
Object
  • Object
show all
Defined in:
lib/stud_finder/diff.rb

Overview

Resolves the set of files changed on HEAD relative to the merge-base with a base ref (e.g. origin/staging), as repo-root-relative paths that match the form FileCollector emits. Used to filter output down to a PR's touched files WITHOUT narrowing the analysis population — scoring still runs against the full repo, so fan_in and percentiles stay correct.

Defined Under Namespace

Classes: Error

Instance Method Summary collapse

Constructor Details

#initialize(repo_path:, base_ref:) ⇒ Diff

Returns a new instance of Diff.



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# File 'lib/stud_finder/diff.rb', line 14

def initialize(repo_path:, base_ref:)
  @repo_path = File.expand_path(repo_path)
  @base_ref = base_ref
end

Instance Method Details

#changed_paths ⇒ Object 



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# File 'lib/stud_finder/diff.rb', line 23

def changed_paths
  verify_ref!
  stdout, stderr, status = Open3.capture3(
    'git', '-C', @repo_path, 'diff', '--name-only', '--diff-filter=d', "#{@base_ref}...HEAD"
  )
  raise Error, diff_error(stderr) unless status.success?

  stdout.each_line.map(&:strip).reject(&:empty?)
rescue Errno::ENOENT
  raise Error, 'Error: git not found in PATH.'
end

#validate_ref! ⇒ Object 



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# File 'lib/stud_finder/diff.rb', line 19

def validate_ref!
  verify_ref!
end